"TALENTED EMPLOYEES ARE FORCED TO WORK IN COMPANIES NOT SUITABLE TO THEM JUST BECAUSE OF THE FEAR OF LOSING A SOURCE OF INCOME."
Nobody forced you to work in unsuitable company. Why did you accept a Job offer if the company isn't suitable for you, or if the salary doesn't meet your requirements?
Way of your thinking is telling me that you were going to cheat the employer. You have accepted ANY offer, just to get in Qatar letting the employer pay all moving expenses, and later to look for anotehr job, and run away from the employer.. not nice way of thinking... do not accept a job offer if you don't like it. But once you have signed the contract, you have to follow it, like in any business deal. simple.